EP 1165205 B1 20030514 - METHOD AND APPARATUS FOR FORMING MELT-BLOWN FILTER CARTRIDGES HAVING MELT-BLOWN CORE ELEMENTS, AND THE FILTER CARTRIDGES FORMED THEREBY
Title (en)
METHOD AND APPARATUS FOR FORMING MELT-BLOWN FILTER CARTRIDGES HAVING MELT-BLOWN CORE ELEMENTS, AND THE FILTER CARTRIDGES FORMED THEREBY
Title (de)
METHODE UND APPARAT ZUR HERSTELLUNG SCHMELZGEBLASENER FILTERKARTUSCHEN MIT SCHMELZGEBLASENEN KERNEN UND DARAUS HERGESTELLTE FILTERKARTUSCHEN
Title (fr)
PROCEDE ET APPAREIL DE PRODUCTION DE CARTOUCHES FILTRANTES PAR FUSION-SOUFFLAGE COMPORTANT DES ELEMENTS D'AME A FUSION-SOUFFLAGE ET CARTOUCHES FILTRANTES OBTENUES PAR CE PROCEDE
Publication
Application
Priority
- US 0008209 W 20000329
- US 28132099 A 19990330
- US 35888699 A 19990722
Abstract (en)
[origin: WO0057983A1] Filter cartridges may have a core element formed of a non-filtering, self-supporting non-woven mass of indefinite length continuous synthetic polymeric core fibers, and at least one annular filtration zone layer formed of a mass of non-woven indefinite length continuous synthetic polymeric filtration fibers. The non-woven core element is most preferably formed in situ during filter cartridge manufacturing by melt-blowing synthetic polymeric core fiber streams towards a forming mandrel. The non-woven core element is completely solidified prior to the filtration zone fibers being melt-blown thereon so that the core and filtration fibers are predominantly mechanically interlocked with one another, instead of being melt-bonded thereto. Filter cartridges of predetermined length may be cut from an upstream filter cartridge preform of indefinite length by subjecting the preform to forced cooling air to thereby minimize (if not eliminate entirely) significant filter cartridge shrinkage over time. In addition, a cutter assembly may be mounted laterally of the preform, but is capable of rate-synchronized longitudinal movement with the preform during its cutting operation.
IPC 1-7
IPC 8 full level
B01D 39/14 (2006.01); B01D 29/11 (2006.01); B01D 29/13 (2006.01); B01D 39/16 (2006.01); B01D 46/24 (2006.01); B23Q 7/04 (2006.01); B28B 7/14 (2006.01); B28B 11/12 (2006.01); B28B 11/14 (2006.01); B29D 22/00 (2006.01); B29D 23/00 (2006.01); B32B 1/08 (2006.01); D04H 1/70 (2006.01); D04H 3/16 (2006.01); F16L 1/00 (2006.01)
IPC 8 main group level
B01D (2006.01)
CPC (source: EP US)
B01D 46/0001 (2013.01 - EP US); B01D 46/2411 (2013.01 - EP US); Y10T 156/12 (2015.01 - EP US); Y10T 428/139 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0057983 A1 20001005; AT E240146 T1 20030515; AU 4038700 A 20001016; CA 2366456 A1 20001005; CA 2366456 C 20101130; CN 1353624 A 20020612; DE 60002690 D1 20030618; DE 60002690 T2 20040318; EP 1165205 A1 20020102; EP 1165205 B1 20030514; IL 145657 A0 20020630; JP 2002539931 A 20021126; JP 4785253 B2 20111005; US 2002025397 A1 20020228; US 2002031629 A1 20020314; US 6342283 B1 20020129; US 6662842 B2 20031216
DOCDB simple family (application)
US 0008209 W 20000329; AT 00919754 T 20000329; AU 4038700 A 20000329; CA 2366456 A 20000329; CN 00808300 A 20000329; DE 60002690 T 20000329; EP 00919754 A 20000329; IL 14565700 A 20000329; JP 2000607730 A 20000329; US 35888699 A 19990722; US 94166501 A 20010830; US 94167401 A 20010830